Skip to main content Help with accessibility

Due date calculator

Due date calculator

Calculate your baby's due date

Congratulations, you're pregnant! So you can start planning for your new baby, our due date calculator will help you to work out when they're likely to arrive – most babies arrive within a week of their due date.

When was the first day of your last period?

Adjusted cycle length

If your cycle length is shorter or longer than 28 days, please change the number below.

WhatsApp Welcome to Careline via WhatsApp

Our experts are available to chat Monday - Friday, 8am-8pm, excluding bank holidays.

By clicking start, you will open a new chat in your WhatsApp app with our Careline team.


Having trouble?

If you're having issues sending the Careline a message via WhatsApp, please try calling us on 0800 996 1000 instead.